| Item Name | Gear Cluster |
| Federal Supply Group (FSG) | Mechanical Power Transmission Equipment |
| Federal Supply Class (FSC) | 3020 Gear Pulley Sprocket and Transmission Chain |
| National Item Identification Number (NIIN) | 01-396-1981 (013961981) |
| NCB Code | USA (01) |
| Manufacturer | Eaton Aerospace Ltd, Eaton Corporation |
| MRC | Criteria | Characteristic |
|---|---|---|
| CQCF | CONSTRUCTION | SOLID |
| CQFM | HARDNESS RATING | 55.0 ROCKWELL C MINIMUM OVERALL |
| CWCD | NOMINAL OUTSIDE DIAMETER | 0.463 INCHES SECOND GEAR |
| CWCD | NOMINAL OUTSIDE DIAMETER | 0.640 INCHES FIRST GEAR |
| CWQN | HUB NOMINAL LENGTH | 0.260 INCHES BETWEEN FIRST AND SECOND GEAR |
| CWTR | HUB STYLE DESIGNATOR | PLAIN BOTH ENDS |
| CWTX | HUB NOMINAL DIAMETER | 0.190 INCHES BETWEEN FIRST AND SECOND GEAR |
| SFTT | SURFACE TREATMENT | OXIDE OVERALL |
| STDC | SURFACE TREATMENT DOCUMENT AND CLASSIFICATION | MIL-C-13924,CL I MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| APGF | DESIGN TYPE | SPUR ALL GEARS |
| CWFR | NOMINAL OVERALL LENGTH | 0.850 INCHES |
| CWQN | HUB NOMINAL LENGTH | 0.135 INCHES BOTH ENDS |
| CWTR | HUB STYLE DESIGNATOR | PLAIN BETWEEN FIRST AND SECOND GEAR |
| CWTX | HUB NOMINAL DIAMETER | 0.125 INCHES BOTH ENDS |
| MATT | MATERIAL | STEEL COMP 8620 OVERALL |
| Components Related to NSN - 3020-01-396-1981, 3020013961981 | ||||
| 3020-00-093-3146 (3020000933146) | 3010-00-066-5754 (3010000665754) | 3040-01-434-0826 (3040014340826) | 3020-01-605-6227 (3020016056227) | |
| 3040-00-292-9403 (3040002929403) | 3020-01-132-9529 (3020011329529) | 3040-01-628-5278 (3040016285278) | 3040-00-763-7091 (3040007637091) | |
| 3030-01-302-3516 (3030013023516) | 3020-01-706-8292 (3020017068292) | 3010-01-530-0859 (3010015300859) | 3040-00-398-0619 (3040003980619) | |
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